Chair frame



FIG. 1 is a perspective view of a chair frame according to the presentinvention;

FIG. 2 is a side-elevational view of the chair frame of FIG. 1, theother side being a mirror image thereof; and,

FIG. 3 is a front elevational view of the chair frame of FIGS. 1 and 2.

The broken line shown in FIGS. 1-3 are for environmental purposes onlyand form no part of the claimed design.

The ornamental design for a chair frame, as shown and described.